Ive just heard way too many “stories” about those slides on the bunk boards for me to even think about using them. I never unhook the bow of my boat until the trailer is in the water at the depth that I plan to back it off the trailer. I fish by myself most of the time, so I get in, fire up the engine, then go up front and unhook the winch strap, then back the boat off. Probably not necessary at most ramps, but Id rather do that than take a chance on it coming off the trailer prematurely and again…I dont have the slides!